Story behind the photograph

I often read a free newspaper called MX on my way home. In the reader section there is almost always a complaint against CityRail, its staff, trains and service in general. Some of the criticism is deserved and some of it is simply absurd. I wonder if all the negativity towards the service will lead to further demise of the service as the hard working people who provide it may find it hard to motivate themselves to work there.